let bool = true;
let str = "aaa";
let num = 0;
let undef = undefined;
let n = null;
let obj = {};
let map = new Map();
let set = new Set();
let arr = [];

console.log(Array.isArray(bool)); // false
console.log(Array.isArray(str)); // false
console.log(Array.isArray(num)); // false
console.log(Array.isArray(undef)); // false
console.log(Array.isArray(n)); // false
console.log(Array.isArray(obj)); // false
console.log(Array.isArray(map)); // false
console.log(Array.isArray(set)); // false
console.log(Array.isArray(arr)); // true
